Front view
Dial, hands and bezel as delivered.
Case-back view
Case-back engraving and, where fitted, the sapphire display.
Movement
Calibre with its finishing and decoration.
On the wrist
Worn shot for proportion and strap drape.
Greubel Forsey · GMT
Greubel Forsey GMT 44 mm Mother-of-pearl 18k
Reference 65138OR.36
Reference at a glance
- Brand
- Greubel Forsey
- Collection
- GMT
- Model
- Greubel Forsey GMT 44 mm Mother-of-pearl 18k
- Reference number
- 65138OR.36
- Year / era
- 2004 · 2000s — modern production
- Complication
- Time and date
- Movement
- In-house tourbillon, manual-winding
- Case material
- 18k yellow gold
- Dial type
- Mother-of-pearl
- Strap / bracelet
- Integrated steel bracelet
- Water resistance
- 300 m
- Limited-edition status
- Regular production, not a limited edition
Case, dial & bracelet
- Case dimensions
- 44 mm
- Case thickness
- 12.6 mm
- Case material
- 18k yellow gold
- Bezel
- Bidirectional 24-hour Cerachrom
- Crystal
- Anti-reflective sapphire, double-domed
- Dial
- Mother-of-pearl
- Hands
- Faceted dauphine hands, polished by hand
- Indexes
- Applied faceted white-gold indexes
- Bracelet / strap
- Integrated steel bracelet
- Clasp / buckle
- Titanium deployant clasp
- Water resistance
- 300 m
Movement
- Movement / calibre
- Calibre 72D — In-house tourbillon, manual-winding
- Movement type
- Manual-winding
- Frequency
- 36,000 vph (5 Hz)
- Power reserve
- 38 hours
- Number of jewels
- 45 jewels
- Complications
- Time and date
- Functions
- Perpetual calendar, leap year
- Watchmaker
- The calibre is built in-house and adjusted in five positions before delivery.
Production & market
- Production period
- 2004 – 2018
- Limited-edition quantity
- Not applicable
- Current market information
- Thin secondary-market supply — pricing is set piece by piece at auction.
Designer
Emmanuel Gueit
Emmanuel Gueit came from a family of Geneva jewellers and was barely into his twenties when he drew the oversized Royal Oak Offshore in 1993 — a watch the house's traditionalists resisted and collectors turned into an icon.
Historical significance
Greubel Forsey GMT 44 mm Mother-of-pearl 18k sits within Greubel Forsey's GMT line, introduced in 2004. It carries the house codes established since 2004 — 18k yellow gold case, mother-of-pearl dial and in-house tourbillon, manual-winding — and is one of the references collectors use to date the evolution of the collection.
Interesting facts
- The movement's bridges are decorated even where they will never be seen once the watch is cased.
- Early production dials show a slightly different minute track, and collectors pay a premium for them.
The House
Greubel Forsey
Brand facts
- Founding year
- 2004
- Founder
- Robert Greubel & Stephen Forsey
- Headquarters
- Switzerland
- Tier
- Ultra-Luxury & Haute Horlogerie
- Major collections
- Double Balancier, Hand Made 1, GMT, Tourbillon 24 Secondes, Balancier
- Signature technologies
- Proprietary case-hardening and polishing · Anti-magnetic silicon escapement · Hand-applied guilloché dials
- Famous movements
- In-house automatic with 22k gold rotor · In-house automatic micro-rotor · In-house manual-winding, hand-finished · In-house tourbillon, manual-winding
- Notable watches
- Greubel Forsey Double Balancier 40 mm Salmon 18k (2004) · Greubel Forsey Double Balancier 37 mm Blue Sapphire (2004) · Greubel Forsey Double Balancier 41 mm Silvered 18k (2004) · Greubel Forsey Double Balancier 42 mm Black 18k (2004)
Brand history
Greubel Forsey has spent more than 22 years refining a single idea: a watch should outlive its owner. From the earliest workshop pieces to today's Double Balancier, the house has balanced technical ambition with a recognisable design language, and its collections remain among the most closely followed by collectors worldwide.
Robert Greubel & Stephen Forsey established Greubel Forsey in 2004, working from Switzerland at a time when precision was measured by hand. The founder's obsession with finishing and accuracy still defines every Greubel Forsey calibre produced today.
Historical milestones
2004
Robert Greubel & Stephen Forsey founds Greubel Forsey in Switzerland.
2024
Greubel Forsey continues to produce Double Balancier, Hand Made 1, GMT and other icons in limited numbers.